Yamaha Clavinova CLP-350 schematics

Have acquired a CLP-350 in need of TLC. Found service manual etc.online but doesn’t match what I’ve got. Manual suggests DM PCB and ENS PCB but I appear to have a single board (albeit OpAmps & VCA from ENS appear to be on there). I suspect this is a later revision but cannot find details anywhere. Any suggestions on where I can find info ? Thanks

There is only one SM for a CLP350.